Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Patent
1978-05-01
1979-11-20
Hart, Douglas
Power plants
Internal combustion engine with treatment or handling of...
By means producing a chemical reaction of a component of the...
F01N 310
Patent
active
041746104
ABSTRACT:
An air control valve for use in the exhaust emission control system of an internal combustion engine as used for example, in a vehicle, the air control valve, which is adapted to perform three functions, includes a divert timing switching diaphragm assembly which provides the standard diverter valve function during engine warmup and also controls port air injection during all mid-power conditions, a second diaphragm valve assembly that is operative to provide for secondary air by-pass during high engine load or power operating conditions and, a third diaphragm valve assembly adapted to provide secondary air by-pass during low engine load or vehicle cruise conditions.
REFERENCES:
patent: 3924409 (1975-12-01), Heilman
patent: 3934413 (1976-01-01), Beiswenger
patent: 3950943 (1976-04-01), Paddock
patent: 4070830 (1978-01-01), Beiswenger
Hollis Thomas J.
Thornburgh William F.
General Motors Corporation
Hart Douglas
Krein Arthur N.
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